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Tue, 13 Feb 2024 22:36:54 -0800 (PST) Date: Tue, 13 Feb 2024 22:36:51 -0800 Mime-Version: 1.0 Message-ID: <20240214063651.3012733-1-maskray@google.com> Subject: [PATCH] RISC-V: Add tests for constraints "i" and "s" From: Fangrui Song To: kito.cheng@gmail.com, gcc-patches@gcc.gnu.org Cc: Fangrui Song X-Spam-Status: No, score=-19.7 required=5.0 tests=BAYES_00, DKIMWL_WL_MED, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE, USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org The constraints "i" and "s" can be used with a symbol that binds externally, e.g. ``` namespace ns { extern int var, a[4]; } void foo() { asm(".pushsection .xxx,\"aw\"; .dc.a %0; .popsection" :: "s"(&ns::var)); asm(".reloc ., BFD_RELOC_NONE, %0" :: "s"(&ns::a[3])); } ``` gcc/testsuite/ChangeLog: * gcc.target/riscv/asm-raw-symbol.c: New test. --- gcc/doc/md.texi | 2 +- gcc/testsuite/gcc.target/riscv/asm-raw-symbol.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/riscv/asm-raw-symbol.c diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index b0c61925120..c75e5bf259d 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -1947,7 +1947,7 @@ Integer constant that is valid as an immediate operand in a 64-bit @code{MOV} pseudo instruction @item S -An absolute symbolic address or a label reference +A symbolic reference or label reference. @item Y Floating point constant zero diff --git a/gcc/testsuite/gcc.target/riscv/asm-raw-symbol.c b/gcc/testsuite/gcc.target/riscv/asm-raw-symbol.c new file mode 100644 index 00000000000..28305a8b1f0 --- /dev/null +++ b/gcc/testsuite/gcc.target/riscv/asm-raw-symbol.c @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-options "-fpic" } */ + +extern int var, arr[2][2]; + +void +test (void) +{ + __asm__ ("@ %0" : : "i"(&var)); + __asm__ ("@ %0 %1 %2" : : "s"(&var), "s"(&arr[1][1]), "s"(test)); +} + +/* { dg-final { scan-assembler "@ var arr\\+12 test" } } */ +/* { dg-final { scan-assembler "@ var" } } */